people are emotional, understandably, here in newtown, connecticut. they're walking past these memorials and just reflecting on what is going on. so many questions remain unanswered. we might get some answers at a news conference. we're awaiting the connecticut state police, they're going to be speaking shortly, we're told. we've been expecting them for a while. you see the microphones are all set up. we'll have live coverage once the connecticut state police show up there. >>> in the meantime, much of the attention in the news media has focused in on the mental health of adam lanza, the 20-year-old who committed this mass murder here at this elementary school in newtown. our chief medical correspondent dr. sanjay gupta is joining us. sanjay, i want you to put in perspective. there have been these reports that adam lanza had autism. some people are jumping to conclusions inappropriately. give us some perspective on what this means. >> there are two important points here. first of all, when you talk about autism or anything on the autism spectrum. you'